.certificate-hover:hover{
    animation: certificate-rotation 0.9s infinite;
}

@keyframes certificate-rotation {
    0%   {transform: rotate(0deg)}
    12%  {transform: rotate(-2.5deg)}
    24%  {transform: rotate(-5deg)}
    36%  {transform: rotate(-2.5deg)}
    48%  {transform: rotate(-0deg)}
    60%  {transform: rotate(2.5deg)}
    72%  {transform: rotate(5deg)}
    84% {transform: rotate(2.5deg)}
}

.certificates-card{
    width: 18rem;
}

.certificate-size {
    width: 780px;
    height: 1000px;
}

@media (max-width: 991px) {
    .certificate-size{
        width: 480px;
        height: 700px;
    }
}